Antiskidding device.



UNITED vSTATES PATENT OFFICE.

WILLIAM NORTON, OF SAN FBANOISCO, CALIFORNIA.

ANTISKIDDING DEVICE.

Specification of Letters Patent.

Patented May 16, 1916.

Application led August 21. 1915. Serial No. 47,541'.

provements in the construction of the antiskiddingdevice for whichLetters Patent of the United ntates numbered 1,117,040 were issued t6inc on the 20th day of July, 1915; and has forit's objects: First, toprovide an improved antiskiddingdevice so mounted upon the frame of amotor vehicle or the like that shocks and vibrations received by thedevice will be prevented from reaching the frame 'or chassis of thevehicle. Second,

to provide an improved device of the character describedhaving-resilient shock absorbing means interposed between the contactshoe and the operating means therefor. Third, to provide an -improveddevice that shall be simple, effective, cheap and durable inconstruction and in operation.` Fourth, to provide an improved device ofthe character described that shall be inconspicuous when in an inoperatic p'isition so as not to mar or detractq from tle appearance of the Jaror vehicle. 1 accomplish these several features by means of the devicedisclosed in the .lrawings forming` a part of the present specificationswherein like characters of reference are used to designate similar partsthroughout the said specifications and drawings and in whichlfg'ure 1 abroken side elevation of a rar lor vchiU-e with the `body and nigh rearv. heel removed in order'to disclose the manner in which the improveddevice is attached thereto, the dotted lines indicating the inoperative,and 'the full lines indicating the operative positions, respectively.Fig. 2

Vis a transverse sectional view taken on line X-X of Fig.' 1 of thedrawings in the direction indicated.

referring to the drawings the numeral 1 is used to design-.ite averticall v disposed tubular mci'uber pivotall)7 mounted, by means oftrunnious 2, between longitudinal channels 3 offa frame or chassis 4.The member 1 is also provided with longitudinal slots 5 and lateral lugs(i on the. lowerend thereof to which lugs G are secured lateral inclinedbraces T, said braces 7 being secured at their upper endsY to thetrunnions 2 but on the opposite sides of the channels 3, therebyproviding asuitable support against lateral movement.

lV hat I term a sleeve S, to differentiate from the tubular member 1, isslidahly mounted within said tubular member 1 and is provided withlateral lugs 9 Vwhich pro- `iect through and beyond the slots 5 of .saidmember 1. r1`he upper end of the sleeve 8 is closed as at 11 while thelower end thereof is provided with an annular flange 12 adapted toengage and raise a plunger or piston 14 secured to a stem 16 ofalongitudinally disposed shoe 17, having longitudinal grooves 18 in thebottom thereof. A suitable spring 19 is interposed between the top ofthe plunger or piston 14: and the closed.v

top 11 of the sleeve 8, the purposeof which will hereinafter more fullyappear. A bell crank lever 21 is pivotally mounted upon a b 'acket 22rigidly secured to the chassis or frame 1 and is provided with abifurcated arm 23 which is operatively connected to the lugs 9 of thesleeve 8 by means of connec-ting links 24, while the other arm 26 of thebell crank lever 21 is operatively connected, by means of a suitaoleconnecting rod 27, to the lower end of an operating lever 28 pivotallymounted upon a sector 29 secured to the chassis or frame t. H isprovided with the usual detent 31 and releasing latch The forward end ofthe shoe 17 is connected to the forward part of a machine ,by means of asuitable rod 33 which is secured to a somewhat flexible metallic bracket3G.

The operation is as follows: lVhen inoperative the device will bepositioned as discloscdin dotted lines in Fig. 1 of the drawings. lVhenthe vehicle starts to skid or move sidewisc thc rear wheels 34 will notfollow the front wheels To prevent a side movement of the rear wheelsand rear portion of the car or vehicle the lever 28 -is moved to theposition indicated in full lines in Fig. 1 of the drawings which actionwill cause the bifurcated arm 23 of the bell crank lever 21 to move thesleeve 8 and shoe 17 slidably mounted therein downward and the latterinto contact with a roadway. the shoe has formed such Contact anadditional pressure is brought to bear on the lever 28 until the spring19 is compressed between the top of the piston 11 and the closed top 11of the sleeve 8. The detent 31 'ill normally prevent a release or returnof The lever the lever 28 and consequently the shoe 17 will be held incontact with the roadway thereby causing the grooves 18 to engage saidroadway and thereby prevent a lateral or skidding movement of thevehicle. lVhile in this position the pressure will be .upward throughthe stem 16 of the piston 1-1 and onto the spring 19 thereby furthercompressingsaid spring. lVei-e the spring 19 not interposed between thepiston l-l and the top 1l ot' the sleeve 8 it is obvious that jars andshocks occasioned by the moving contact ot' the shoe 1T with tbe roadwaywould be communicated directly to the' bracket 22 and thereby to theframe or chassis l and also to the operating,` lever 2* which mightinjure the arm of the operator were he holding said brake or lever QS.These jars and shocks are, however, absorbed by the spring 19 andthereby prevented from reaching the frame i of the operating lever 2S,which might otherwise injure and wrack said frame 4 and some ot' themechanism attached thereto; loosening joints and otherwise damaging theCar. l

lVhile the device is in an operative position as above described theshoe 17 and tubular member 1 are prevented from moving backward by meansof the rod 32 which 'connects the front end of Said shoe 17 with the.bracket 256 near the tront o'i' the Jframe Jr. The tubular member 1 andshoe 17 slidably mounted therein are also supported against lateralmovement, due to the skidding movement, by means ot the lateral or sidebraces 7. Any vibration ot a violent nature due to the contact ot' theshoe 17 with the roadway will be readily taken up by means ot theconnecting links and also by means of the flexibility of the bracket 36.

lt is obvious from the foregoing that I have provided an improvedantiskidding` device that is adapted to prevent skidding and also meanswhereby the shocks and jars caused by such skidding will be absorbedbet'ore reaching the frame and the operating lever 28.

I'am. aware that the present state of the art discloses anti-skidding;`devices comprising a vertically reciprocatinglr member adapted to engagea roadway and thereby retard a forward or lateral niovement of a vehicleto which they are attached. I therefore do not wish to claimA such acombination broadly but lVhat I do claim as new land desire to Se cureby Letters Patent is- 1. An antiskidding device for motor vehicles andthe like comprising a vertically disposed tubular member pivotallymounted upon the trame of'a vehicle; a 'vertically reciprocating shoeslidably mounted within the tubular member; means operatively connectedto the shoe and adapted to lower the same into contact with a. roadway;resilient shock absorbing;r means interposed between the shoe and theoperating means therefor; and a suitable rod operatively connected tothe shoe and to the front cnd ot the vehicle and adapted to prevent abackward movement ot said shoe when the saine is in contact with theroadway.

2. An antiskiddingdevice for motor vchiolcs and the like comprising' avertically disposed tubular member pivotally mounthicles and the likecomprising a vertically disposed Itubular member pivotally mounted uponthe frame of a vehicle; a sleeve slidably mounted within the tubularmember and having a closed upper end thereto; a shoe slidably mountedwithin the sleeve; a suitable spring interposed between the top Aof theshoe and the closed end ot' the sleeve; and a suitable lever pivotallymounted upon the vehicle and operatively connected to the sleeve wherebythe same may be raised or lowered and the shoe brought into contact witha roadway.

4. An antiskidding;` device for motor vehicles and the like comprising'a vertically disposed tubular member pivotally mounted upon the i' 'ameof a vehicle and having longitudinal slots in the sides thereof;suitable braces pivotally mounted upon the' frame with the/.tubularmember and adapted -to brace the same laterally; a sleeve slidablymounted within *the tubular member and having the upper end' thereofclosed and lateral lugs thereon projecting through the slots in thetubular'mcmber; 'a shoe having.,r longitudinal grooves on the, lowersurface thereof slidably mounted within the sleeve; a suitable spring;interposed between the top of the shoe and the closed top of the sleeve;and a suitable lever pivotally mounted upon the frame and loperativelyconnected to the` sleeve whereby the same may be lowered and therebybring'the shoe into contact with a roadway. n

An antiskidding device for motor vehicles and the like comprising avertically disposed tubular member pivotally mounted upon the frame of avehicle and having lon- ',gi'tudinal slots in the sides thereof;suitable braces pivotally mounted upon the frame with the tubular memberand adapted to brace the lower end of the member against lateralmovement; a sleeve slidably mounted y llesflo? within the tubulat'rvIneniber .and having the' upper end thereof closed yand laterelrlugsthereon projecting .through the slots in the tubular 'memberg a. shoesldably mounted within the sleeve and having-longitudinal grooves in thebottom thereof adapted to eny gage :i rodway and thereby prevent alateral movement of vehicle to which it is attached; :L suitable springinterposed be tween the top ,fof the shoe and the closed top thereof; asuitable bracket secured -to the fre-mega bell crdnk leverpvota-llymounted upon the bracket and adapted te engage vlthe vlu'gson thesleeve; and a suitable lever pvot-v ally mounted upon the frame andoperal5 tively connected` to the bell crank lever whereby the sleeve muybe m2 fl or lowered nature.

'if 'V WILLIAM NORTON.

